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JPL Small-Body Database Browser
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27156 (1998 YK22)
Classification: Main-belt Asteroid          SPK-ID: 2027156
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .162393206835696 3.8149e-08  
a 2.427771686633407 1.0757e-08 au
q 2.033518056976102 9.534e-08 au
i 6.5654497036984 4.2463e-06 deg
node 262.6812080182435 3.7647e-05 deg
peri 109.1682758509491 4.0604e-05 deg
M 320.627902482431 1.7522e-05 deg
tp 2459151.611056360837
(2020-Oct-29.11105636)
6.7899e-05 TDB
period 1381.688650588822
3.78
9.1833e-06
2.514e-08
d
yr
n .2605507397390737 1.7317e-09 deg/d
Q 2.822025316290713 1.2504e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1170  
   data-arc span      11457 days (31.37 yr)  
   first obs. used      1988-02-16  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5465  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:58:06  

Additional Information
 Earth MOID = 1.04538 au 
 Jupiter MOID = 2.68849 au 
 T_jup = 3.482 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO384980  
diameter diameter 2.918 km 0.294 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.273   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27156 (1998 YK22)          Discovered 1998-Dec-21 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 YK22 = 1988 DY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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